单项选择题

— Must l turn off the light when I leave
— No,______.

A．you mustn't
B．you can't
C．you needn't
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单项选择题
I learn French ______the radio every morning.
A．by
B．on
C．with
单项选择题
Neither Peter ______Jack works in this factory.
A．or
B．nor
C．either
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